Compositae vs Hieracium

Compositae and Hieracium both are nouns.

Word	Noun	Adjective	Verb	Adverb
Compositae	Yes	No	No	No
Hieracium	Yes	No	No	No

Compositae (noun)	Hieracium (noun)
plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia	large genus of perennial hairy herbs of Europe to western Asia to northwestern Africa and North America; few are ornamental; often considered congeneric with Pilosella